They haven’t been produced in decades, but [Chris Chung] has used some open source code to create DIY hardware version of the HP-41 Reverse Polish Notation (RPN) calculator. The open source code ...

If you like Nixie tubes and/or DIY calculators, checkout this interesting talk from the HP Handheld Conference in Orlando last month by [Eric Smith] from Brouhaha and [John Doran] from Time ...

Cointelegraph’s crypto calculator and converter tool provides an easy way to calculate the fiat currency (USD, AUD and EUR) value of certain crypto assets. Medical device firm Semler Scientific ...

Chips in early Busicom calculators were made in the United States by Mostek, while those in the Bowmar and Canon were by Texas Instruments. Hewlett-Packard Corporation joined the market in early 1972 ...

So the shocking discovery of an apparently rogue HP-12C has sent tremors through the calculator aficionado world.… The HP-12C ...

See how your savings and investment account balances can grow with the magic of compound interest. Many, or all, of the products featured on this page are from our advertising partners who ...

In such cases, a date calculator is your best bet. Avoid cumbersome calculations and measure percentage changes, percentage difference between two values instantly with this easy-to-use percentage ...

Check the currency rates against all the world currencies here. The currency converter below is easy to use and the currency rates are updated frequently. This is very much needed given the ...

If your total itemized deductions are less than the standard deduction, the calculator will use the standard deduction. Enter your total 401k retirement contributions for 2022. For 2022 ...

If you have at least 15% equity in your home, you may be able to qualify for a home equity line of credit. Some or all of the mortgage lenders featured on our site are advertising partners of ...

Mashable reviews quite a few laptops every year, and one of the most reliable laptop brands we've tested is HP. That said, multiple great options can be a double-edged sword. How do you narrow it ...

If you’ve ever wondered how much of your monthly payment will go toward interest and how much will go toward principal, an amortization calculator is an easy way to get that information.